Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «N»:

NeuroplasticityNeuroplasticity: The brain's ability to reorganize itself by forming new neural connections throughout life. Neuroplasticity allows the neurons (nerve cells) in the brain to compensate for injury and disease and to adjust their activities in response to new situations or to changes in their environm...

NeuropsychologistNeuropsychologist: A psychologist who has
completed special training in the neurobiological causes of
brain disorders, and who specializes in diagnosing and
treating these illnesses using a predominantly medical (as
opposed to psychoanalytical) approach....

NeuroradiologistNeuroradiologist: A
radiologist who specializes in the use of radioactive
substances, x-rays and scanning devices for the diagnosis and treatment of
diseases of the nervous system. A neuroradiologist mat be concerned with the
clinical imaging, therapy, and basic science of the central and periph...

NeuroradiologyNeuroradiology: The field within radiology that specializes in the use of radioactive substances, x-rays and scanning devices for the diagnosis and treatment of diseases
of the nervous system. Neuroradiology involves the clinical imaging, therapy,
and basic science of the central and peripheral n...

NeuroscienceNeuroscience: The study of the brain and nervous system, including molecular neuroscience, cellular neuroscience, cognitive neuroscience, psychophysics, computational modeling and diseases of the nervous system. See also: Neuroscientist....

NeuroscientistNeuroscientist: A scientist who studies the nervous system, including the neural basis of behavior; parts of the nervous system such as the visual or auditory systems; the function of groups of neurons (nerve cells); what individual neurons do; what happens at the synapse; ion channels in a neuronal...

NeurosisNeurosis: A chronic disorder featuring irritability of the nervous system (nervousness) and characterized by anxiety and/or extreme behavior dedicated to avoid anxiety situations....

NeurosteroidNeurosteroid: A brain steroid, a molecule structurally similar to cortisone, progesterone and the gonadal hormones.
Neurosteroids play a role in controlling anxiety and depression. Antidepressant drugs known as selective serotonin reuptake inhibitors (SSRIs) increase the brain levels of neurosteroid...

NeurosurgeonNeurosurgeon: A physician trained in surgery of the
nervous system and who specializes in surgery on the brain and other
parts of the nervous system. Sometimes called a "brain
surgeon."...

NeurosyphilisNeurosyphilis: Neurological complications in the
third (tertiary) and final phase of syphilis, which involve the
central nervous system and can include psychosis, pain, and loss of
physical control over a variety of bodily functions....

Neurosyphilis, tabesNeurosyphilis, tabes: Also known as tabes dorsalis, the
slowly progressive degeneration of the spinal cord that occurs in the late (tertiary)
phase of syphilis a decade or more after contracting the infection. Among the terrible
features are lancinating lightning-like pain, ataxia (wobbliness), dete...

NeurotheologyNeurotheology: The search for the place(s) in the brain where religious beliefs originate. Neurotheology mixes terms and methods from science and religion in an attempt to confer the authority of science upon religion.
For example, a SPECT scan-study of a small number of Tibetan Buddhists and Franci...

NeurotoxicNeurotoxic: Poisonous to nerves or nerve tissue. Mercury and lead are neurotoxic....

NeurotoxinNeurotoxin: A substance that causes damage to
nerves or nerve tissue. For example, lead is a
neurotoxin....